v2.4.0.8
Restructuring Charges - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]            
Restructuring charges $ 212,000 $ 201,000 $ 106,000 $ 246,000 $ 519,000 $ 837,000
China Subsidiary
           
Restructuring Cost and Reserve [Line Items]            
Restructuring charges         519,000  
Number of positions eliminated         50  
Operating expenses         1,200,000  
Shanghai facility
           
Restructuring Cost and Reserve [Line Items]            
Restructuring charges   112,000        
Toronto, Canada, Idle Facility
           
Restructuring Cost and Reserve [Line Items]            
Restructuring charges $ 175,000